M’mapangidwe a PCB bolodi, anti-ESD kapangidwe ka PCB imatha kuzindikirika kudzera pakukhazikitsa, kukhazikitsa koyenera ndikuyika. Pakukonzekera, kusintha kwamapangidwe ambiri kumangokhala kungowonjezera kapena kuchotsa zigawozo mwa kuneneratu. Mwa kusintha mawonekedwe a PCB ndi zingwe, ESD imatha kupewedwa.

Mphamvu zamagetsi za PCB zochokera mthupi la munthu, chilengedwe komanso ngakhale zida zamagetsi zamagetsi za PCB zitha kuwononga zida zingapo za semiconductor chip, monga kulowa mkati mwazitsulo zosanjikiza mkati mwazinthuzo; Kuwonongeka kwa zipata za MOSFET ndi CMOS zigawo; CMOS imayambitsa loko mu PCB; Kusiyanitsa kwakanthawi kochepa PN mphambano; Short-dera zabwino PCB buku bolodi tsankho PN mphambano; PCB bolodi yosungunulira waya kapena waya wa aluminium mu bolodi la PCB gawo la chida chogwira ntchito. Pofuna kuthana ndi kusokonekera ndi kuwonongeka kwa ma electrostatic discharge (ESD) pazida zamagetsi, ndikofunikira kutenga njira zingapo zaluso kuti muteteze.

Mu kapangidwe ka bolodi la PCB, anti-ESD kapangidwe ka PCB imatha kuzindikirika kudzera pakukhathamiritsa ndi kuyika koyenera kwa bolodi ya PCB ndi bolodi ya PCB yolumikizira ndikuyika. Pakukonzekera, kusintha kwamapangidwe ambiri kumangokhala kungowonjezera kapena kuchotsa zigawozo mwa kuneneratu. Mwa kusintha mawonekedwe a PCB ndi zingwe, zitha kuteteza PCB ESD. Nazi njira zina zodzitetezera.

Gwiritsani ntchito ma PCBS angapo ngati kuli kotheka. Ndege zapansi ndi zamagetsi, komanso mizere yolumikizana yolimba, imatha kuchepetsa kupindika kosakanikirana komanso kulumikizana ndi 1/10 mpaka 1/100 kwa PCB yofananira ndi kuyerekezera ndi PCB yachiwiri. Yesetsani kuyika chizindikiro chilichonse pafupi ndi mphamvu kapena pansi. Ma PCBS okhala ndi zinthu zazitali kwambiri pamwamba ndi pansi, zolumikizana kwambiri, ndikudzaza nthaka, lingalirani kugwiritsa ntchito mizere yamkati. Kwa ma PCBS okhala mbali ziwiri, amagwiritsidwa ntchito mwamphamvu zamagetsi ndi ma grids. Chingwe cha magetsi chili pafupi ndi nthaka ndipo chiyenera kulumikizidwa momwe zingathere pakati pa mizere yopingasa ndi yopingasa kapena malo odzaza. Kukula kwa mbali imodzi gululi PCB adzakhala zosakwana kapena wofanana 60mm, ngati n’kotheka, gululi kukula adzakhala zosakwana 13mm.

Momwe mungapangire anti-ESD ya board ya PCB

Onetsetsani kuti bolodi lililonse la PCB likugwirizana momwe zingathere.

Ikani zolumikizira zonse pambali momwe zingathere.

Ngati ndi kotheka, yongolerani mizere ya PCB kuchokera pakatikati pa khadi kutali ndi madera omwe ali ndi ESD.

Pamagawo onse a PCB pansipa olumikizira omwe amatuluka mu chassis (ma board a PCB ali pachiwopsezo cha ESD), ikani chassis yayikulu kapena polygon yodzaza pansi ndikuwalumikiza pamodzi ndi mabowo pafupifupi 13mm.

Mabowo okwera a PCB amaikidwa m’mphepete mwa khadi, ndipo mapepala apamwamba ndi apansi a PCB omwe amatseguka otseguka amalumikizidwa pansi pa chassis kuzungulira mabowo omwe akukwera.

Mukamasonkhanitsa PCB, musagwiritse ntchito solder iliyonse pamtundu wa PCB wapamwamba pamwamba kapena pansi. Gwiritsani ntchito zomangira zokhala ndi ma pulogalamu omasulira a PCB kuti mukwaniritse bwino pakati pa PCB ndi PCB kukopera / chishango chachitsulo chachitsulo kapena kuthandizira panthaka.

Malo omwe “kudzipatula” omwewo akuyenera kukhazikitsidwa pakati pa chassis ndi pansi pozungulira pamizere iliyonse; Ngati kuli kotheka, sungani malo pakati pa 0.64mm.

Pamwamba ndi pansi pa khadi pafupi ndi dzenje lokwera la PCB, lolumikizani pansi pa chassis ndi dera loyendera limodzi ndi waya wa 1.27mm mulifupi 100mm iliyonse pama waya oyambira pansi. Pafupi ndi malo olumikiziranawa, pedi kapena phando lokwezera limayikidwa pakati pa chassis ndi bolodi la dera la PCB. Maulalo apansiwa amatha kudula ndi tsamba kuti akhalebe otseguka, kapena kulumpha ndi maginito mikanda / ma frequency capacitors ambiri.

Ngati bolodi la dera silingayikidwe mubokosi lazitsulo kapena chida chotetezera cha PCB, waya wapamwamba ndi wotsika pansi wa chassis wa bolodiyo sangathe kukulungidwa ndi kukana kwa solder, kuti athe kugwiritsidwa ntchito ngati ma elekitirodi a ESD arc.

Kukhazikitsa mphete mozungulira dera mu njira yotsatirayi ya PCB:

(1) Kuwonjezera m’mphepete mwa PCB bolodi owerenga ndi galimotoyo, ndi periphery lonse aikidwa mozungulira mphete njira.

(2) Onetsetsani kuti m’lifupi mwake zigawo zonse ndizapamwamba kuposa 2.5mm.

(3) Mabowo amalumikizidwa mu mphete 13mm iliyonse.

(4) polumikiza nthaka annular ndi nthaka wamba Mipikisano wosanjikiza PCB buku dera pamodzi.

(5) Kwa matabwa a PCB amagulu awiri omwe amaikidwa munthumba zachitsulo kapena zotetezera, nthaka ya mpheteyo iyenera kulumikizidwa ndi dera lofanana. Kwa ma circuits okhala ndi mbali ziwiri osasunthika, nthaka ya mpheteyo iyenera kulumikizidwa ndi chassis, nthaka ya mpheteyo siyiyenera kutenthedwa ndi kutuluka, kuti nthakayo ikhale ngati ndodo yotulutsa ESD, osachepera 0.5mmmm mulifupi penapake pa nthaka mphete (zigawo zonse), kuti PCB bolodi sangathe kupanga kuzungulira lalikulu. Kulumikizana kwama siginecha sikuyenera kukhala kochepera 0.5mm kutali ndi mpheteyo.